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Table 1 Summary of estimated R0 of COVID-19 outbreaks in six countries

From: Low dispersion in the infectiousness of COVID-19 cases implies difficulty in control

Country Time interval R0
France 20/2/2020–12/3/2020 3.5 (3.2, 3.8)
7/2/2020–12/3/2020 2.0 (1.7, 2.3)
UK 21/2/2020–12/3/2020 2.9 (2.6, 3.2)
11/2/2020–12/3/2020 2.0 (1.7, 2.3)
Singapore 23/1/2020–23/2/2020 1.7 (1.4, 2.0)
Germany 21/2/2020–12/3/2020 3.5 (3.2, 3.8)
11/2/2020–12/3/2020 2.3 (2.0, 2.6)
Spain 21/2/2020–12/3/2020 3.5 (3.2, 3.8)
11/2/2020–12/3/2020 2.3 (2.0, 2.6)
Japan 23/1/2020–12/3/2020 1.7 (1.4, 2.0)
11/2/2020–12/3/2020 2.3 (2.0, 2.6)
  1. We adopted a similar method as in [1], and simulate a Negative-binomial process to match the observed daily cases in these country over the chosen time period when the number grew exponentially. Using a maximum likelihood approach to infer R0. The method is also explained in [6,7,8]